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首页> 外文期刊>Journal of Materials Chemistry, A. Materials for energy and sustainability >Vertical bismuth oxide nanosheets with enhanced crystallinity: promising stable anodes for rechargeable alkaline batteries
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Vertical bismuth oxide nanosheets with enhanced crystallinity: promising stable anodes for rechargeable alkaline batteries

机译：具有增强结晶度的垂直铋纳米蛋白酶：用于可充电碱性电池的有前途的稳定阳极

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摘要

Aqueous alkaline batteries represent an emerging kind of energy storage device, which hold great promise to power electronics with both high energy density and power density. However, their development is severely limited by their anodes which have unsatisfying cycling stability. Herein, we report the facile synthesis of Bi2O3 nanosheets vertically aligned on carbon paper, which achieve good electrochemical properties as anodes for alkaline batteries. It is also demonstrated that the crystallinity plays an important role in adjusting the energy storage ability. High crystallinity can efficiently promote the ion diffusion rate within Bi2O3, the reversible phase transition and the accommodation of structural strain, which significantly boost the capacity and cycling stability. The as-obtained highly crystalline Bi2O3 electrode reached a high specific capacity of 0.14 mA h cm(-2) at 4 mA cm(-2) and achieved outstanding electrochemical stability, with a high capacity retention of 71.4% after 5000 cycles. These findings will provide additional insight into the construction of high-performance anodes for alkaline batteries.
机译：碱性电池水电池代表一种新兴的能量存储装置，其具有高能量密度和功率密度的电力电子设备具有很大的承诺。然而，它们的发展受到循环稳定性不满意的阳极的严重限制。在此，我们报告了在碳纸上垂直取向的Bi2O3纳米片的容易合成，其实现良好的电化学性能作为碱性电池的阳极。还表明结晶度在调整能量存储能力方面发挥着重要作用。高结晶度可以有效地促进Bi2O3内的离子扩散速率，可逆相转变和结构应变的容纳，这显着提高了容量和循环稳定性。在4 mAcm（-2）下，如获得的高晶体Bi2O3电极达到0.14mA H cm（-2）的高比容量，并达到了优异的电化学稳定性，在5000次循环后高容量保持为71.4％。这些调查结果将提供额外了解碱性电池的高性能阳极构建。

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    Zheng Haibing; Li Haodong; Yu Minghao; Zhang Min; Tong Yexiang; Cheng Faliang; Lu Xihong;

  • 作者单位

    Dongguan Univ Technol Guangdong Engn &

    Technol Res Ctr Adv Nanomat Dongguan 523808 Guangdong Peoples R China;

    Sun Yat Sen Univ Sch Chem MOE Key Lab Bioinorgan &

    Synthet Chem Guangzhou 510275 Guangdong Peoples R China;

    Sun Yat Sen Univ Sch Chem MOE Key Lab Bioinorgan &

    Synthet Chem Guangzhou 510275 Guangdong Peoples R China;

    Dongguan Univ Technol Guangdong Engn &

    Technol Res Ctr Adv Nanomat Dongguan 523808 Guangdong Peoples R China;

    Sun Yat Sen Univ Sch Chem MOE Key Lab Bioinorgan &

    Synthet Chem Guangzhou 510275 Guangdong Peoples R China;

    Dongguan Univ Technol Guangdong Engn &

    Technol Res Ctr Adv Nanomat Dongguan 523808 Guangdong Peoples R China;

    Wuyi Univ Sch Appl Phys &

    Mat Jiangmen 529020 Guangdong Peoples R China;

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  • 正文语种 eng
  • 中图分类 工程材料学;
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